DCN-Ex

DCN-Ex - Example-1 24 voice channels are to be multiplexed...

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Example-1 24 voice channels are to be multiplexed and transmitted over twisted pair cable. (i) What is the bandwidth required for FDM assuming 4 KHz is needed per voice channel ? (ii) Assuming bandwidth efficiency of 1bps/Hz and data rate of 64 Kbps per voice channel, what is the bandwidth required for TDM ? Example-2 Ten 9600-bps lines are to be multiplexed using TDM. Ignoring overhead bits, what is the channel capacity required for synchronous TDM ? Assuming that the line is idle for 25% of time, what is the channel capacity required when using statistical time division multiplexer ?
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Example-3 A 4320-byte message is to be transmitted through a network using Virtual Circuit (VC) approach. Assume the size of each packet is 256 bytes and it takes 0.5 sec to transfer each packet across the network. VC approach requires a 2-byte VC identifier overhead per packet and it takes 2 sec to establish logical path. Calculate how long it will take to receive the entire
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This note was uploaded on 07/15/2011 for the course ECO 2023 taught by Professor Mr.raza during the Summer '10 term at FAU.

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DCN-Ex - Example-1 24 voice channels are to be multiplexed...

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